The Changes Of Cervical Range Of Motion After The Single-Level And Double-Level Cervical Spine Fusion

Objective: To investigate the effect of the Single-level and double-level cervical spine fusion.Methods: From June 2010 to June 2012, 43 patients with cervical disease were adopted by our department and treated with cervical spine fusion, among whom there were 29 cases of single-level fusion, 14 cases of double-level fusion. The curative effects and fusion rate of spine fusion was detected by symptom and X-ray. The cervical flexion, backward extension, left and right lateral bending, left and right rotation of all patients were measured by the CROM device about pre-operation and 24 months after surgery respectively.Results: all patients clinical symptoms have been alleviated and segmental fusion rate was 100% by x-ray imaging. In single-level fusion group, cervical range of motion in left and right lateral bending was no significant difference after underwent cervical spine fusion(P> 0.05). But the cervical flexion, backward extension, left and right rotation of patients was significantly lower than preoperative(P <0.05). In double-level cervical spine fusion group, cervical range of motion after cervical fusion surgery were significantly lower in six directions compared with the preoperative(P <0.05). The differences of two surgical options indicated that cervical range of motion were obvious reduced in six directions in the double-level cervical spine fusion group(P <0.05).Conclusion: The cervical spine fusion reduces the range of cervical motion of cervical disease patients, and it closely related with the number of fusion segments.